Hiroshi Kawamata

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Chiba-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Solar cell electronic device
- Patent number 8,699,305
- Issue date Apr 15, 2014
- Seiko Instruments Inc.
- Hisao Nakamura
- G04 - HOROLOGY
Information Patent Grant
Wrist mounting-type portable electronic apparatus having bangle-typ...
- Patent number 6,796,708
- Issue date Sep 28, 2004
- Seiko Instruments Inc.
- Hiroshi Kawamata
- G04 - HOROLOGY

Patents Applicationslast 30 patents

Information Patent Application
SOLAR CELL ELECTRONIC DEVICE
- Publication number 20120327750
- Publication date Dec 27, 2012
- Hisao NAKAMURA
- G04 - HOROLOGY
Information Patent Application
Portable electronic apparatus
- Publication number 20040017735
- Publication date Jan 29, 2004
- Susumu Kotanagi
- G04 - HOROLOGY
Information Patent Application
Wrist mounting type portable appparatus having bangle type strap
- Publication number 20030174589
- Publication date Sep 18, 2003
- Hiroshi Kawamata
- G04 - HOROLOGY